Which of the following is the most lethal water pollutant
In water chemical treatment plant, use of chloramines ensures
Both liquid fire and gaseous fire can be extinguished by
Factor of safety or overdesign factor in heat transfer equipment is about ........... per cent more than the actual theoretical design factor.
Chemical foam extinguishers are applicable only for
Correct use of 'factor of safety' is very important in equipment design. It is defined as the ratio of the